Find Remaining of Days in XSL

Scenario:
I have a List for keeping track of my Outsourced resources with fields: Resource Name, Skills, Contract Start Date, End Date, etc. What I want is:Display the No.of remaining days in a page. So Added a calculated field , applied the formula : =IF(Today>=[End Date],0,INT([To Date]-Today)), So simple, isn't it?

hmm, The problem here is: since its a calculated field, it wont get update until you update the record! All I wanted is just to display the remaining days.